SU966414A1 - Injection-type burner - Google Patents

Description

(54) INJECTION BURNER

The invention relates to burners for special purposes and can be used in industrial furnaces as an ignition device.

Known injection burner containing an injection mixer with a fuel supply pipe and a gate placed at the entrance to the mixer.

The disadvantage of these burners is the low range of steady burning.

Closest to the present invention is an injection burner that has a fuel injection unit that has an injection mixer in the form of conjugated cylindrical clamping confueor and diffuor sections, the first of which is provided with an inlet gate, and the second outlet is equipped with a stabilizing confuser with holes in the side wall fitted with periphery protective shell 2.

However, this burner lacks reliability due to low stabilization of combustion and insufficient mixture formation, as well as significant dimensions.

The purpose of the invention is to increase reliability by improving the stabilization of combustion and mixing, as well as reducing the size of the burner.

This goal is achieved by the fact that the fuel cell assembly is made in the form of inclined holes in the cylindrical pinch of the mixer, and the confused part of the latter is formed by parts that are movably connected in the longitudinal direction.

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The drawing shows the burner, a longitudinal section.

The injection burner contains an injection mixer 1 in the form of a conjugated cylindrical pinch 2

15 confused 3 and diffuser 4 sections.

Claims (2)

The mixer 1 is equipped with a fuel supply unit 5. At the entrance to the confusor section 3 of the mixer 1, shielding bar 6 is installed, and at the outlet of the diffuser section 4 a stabilizing jug 7 with an opening is installed. 8 in the side wall, provided on the periphery with a protective shell 9 with holes 10, made at an angle to the device axis. The fuel supply unit 5 is made in the form of inclined holes 11 placed in the cylindrical pinch 2. The confused part 3 of the mixer 1 is formed of two parts 12 and 13, the latter of which is installed with the possibility of longitudinal movement using a cap nut 14. The injection burner works as follows. The gas through the fuel supply unit 5 and the orifices 11, with an increased flow constriction in the resultant, enters the cylindrical pinch 2 of the mixture of bodies 1, by ejecting air entering the confused part 3. By moving the movable part 13 of the confused part 3 along the longitudinal axis, the air dynamics can be changed thus affecting the injecting ability of the burner. The amount of entrained air is regulated by a sparger 6. Gas jet parameters are set by moving mixer 1 along the axis of the fuel supply unit 5. By adjusting the flow of gas and air, they can be optimally adjusted to ensure stable combustion of the flame over a wide range of load and calorie content of the combusted fuel. Next, the mixture enters the diffuser. Section 4, where further mixing occurs. The passage through the outlet of the stabilizing confuser 7, the mixture during combustion forms a high-speed torch. In the peripheral holes 8, it ignites an annular flame on duty, which prevents the main flame from breaking off the flame. The flame is protected from being blown off by the protective shell 9, and the secondary air drawn into the holes 10 facilitates the circulation and the combustion of fuel in the combustion products. The improvement of the mixture formation in the ignition burner is achieved by the fact that the injecting gas jets are directed at an angle to the air flow running along the axis of the burner. At the same time, the resistances in the air path are reduced to the minimum, which allows for more complete combustion. Claims of Inventions An injection burner comprising an injection mixer having a fuel injection unit in the form of conjugated confusor and diffuor sections conjugated with a cylindrical pinch, the first of which is provided with a gate at the inlet, and the second at the outlet with a stabilizing confuser with openings in the side wall equipped with a peripheral shell, in contrast to the fact that, in order to increase reliability by improving the stabilization of combustion and mixture formation, as well as reducing the overall dimensions, the fuel injection unit is made in a fork clone holes in the cylindrical pinch of the mixer, and the confuator section of the latter is formed by parts movably connected in the longitudinal direction. , -. ,, . Sources of information taken into account during the examination 1. Isserlin A.S. Gas-burners. L., Nedra, 1973, p. 75, fig. 35-a. 2. Isserlin A.S. Gas burners, L., Nedra, 1973, p. 140-141. rice 71-a.